Just reporting back on my recent experience....
About 6 months ago, I too started to notice a drastic increase in erection problem and loss of stiffness, to the point embarassing at times around girls. I started to worry and wondered if this was a sign of worse things to come. Luckily, I have to say it turned out to be a minor problem, one that can be easily solved... and I think there is a direct relation between one's fitness/endurance level and erection problem.
It had been nearly a year since I worked out or ran at all. During the peak of my fitness level last summer, I was running atleast 20 laps around the football field, obviously with breaks to stretch and cool down etc. I just started running again a week ago after a break of nearly a year, and it caught me by surprise as to how unfit I had become sitting on my ass the past year and doing no fitness at all. The first day I got back into running a week ago, I was out of breath after only running a lap and half, and felt like throwing up after. I've been running for over a week now and am slowly getting my endurance back. Best of all I've noticed that my erections have gotten much better all of a sudden. The past two days I've been getting rock hard erections just sitting down on my computer or watching tv (CNN... I kid you not) And this is without even thinking of arousing thoughts.
I can't wait till I get my endurance and fitness level back to how I was last summer, when I could fuck for hours and needed it badly everyday. I realize the year without doing any fittness, sitting on my ass infront of the computer everyday, drinking and the occasional toke, all contributed to my erectile problem.
So to all you guys out there experiencing this problem, you all might want to take up cardio or start running again. Besides giving you endurance and stamina, I believe running tightens your butt muscles and areas around your penis considerably. I don't know if weight lifting or just staying fit through other sports will solve one's erectile problem like through running. I *thought* I was fit looking in the mirror everyday, but I guess internally I was a mess from having not done anything for a year. I recall reading somewhere that weightlifting does the opposite since instead of holding in your kegel muscles, you tend to do the opposite.
willl report back at a later date when I'm reaching my fitness peak.